User blog comment:Shfan135/Is it possible that..../@comment-775152-20120712012025

An interesting theory... I didn't really consider that Sparda was one of many. To me, Sparda is the progenerator of the family line, so Dante's name would be "Dante Sparda." Of course Mundus knows Sparda the First had children, so he's not surprised when Dante faces him.

Also, technically, this is the third time Mundus faces a Sparda: The second was against Vergil.